Full Stack Software Engineer - API Platform Engineering

Eliassen Group; Greenwood Village (CO); Hybrid; Confidential; Full time

Benefits offered by this job

Medical, Dental, Vision benefits

401k with company matching

Life insurance

Job summary

Eliassen Group is seeking a Full Stack Software Engineer to design, build, and operate a modern API platform in a hybrid Greenwood Village, CO setup. You’ll own services end-to-end with OpenAPI contracts, strong testing, and AI-assisted workflows.

The role emphasizes TypeScript, Python, AWS, and DevOps practices, including automation, IaC, and CI/CD, with a strong focus on developer experience and platform reliability.

Qualifications

• TypeScript/Node.js for backend services with strong type system and API development.
• Python production experience with FastAPI or Django and PostgreSQL optimization.
• AWS services including Lambda, Step Functions, S3, SNS/SQS, Secrets Manager, CloudWatch, and RDS/Aurora.
• Infrastructure as code with AWS CDK and/or Terraform.
• GitLab CI/CD, automated testing, security scanning, and multi-stage deployment workflows; monorepo a plus.
• API engineering with OpenAPI/Swagger, OAuth 2.0, versioning, rate limiting, resiliency, and idempotency.
• Testing discipline with unit/integration coverage and automated quality gates.
• Observability with tools such as Splunk or Datadog and production troubleshooting.
• Regular use of AI coding assistants and effective integration into workflows.
• Collaboration and code reviews; clean version control practices.
• Preferred: functional programming concepts and frameworks like Effect.js, fp-ts, or ZIO.
• Preferred: Kubernetes/EKS with Helm, blue/green and canary strategies.
• Preferred: SRE practices including SLIs/SLOs, error budgets, incident response, toil reduction.
• Preferred: secure development, performance optimization, distributed systems.

Responsibilities

• Design, build, and operate APIs to OpenAPI standards with clear contracts and documentation.
• Develop backend services using TypeScript/Node.js and Python frameworks such as FastAPI or Django.
• Implement automation via infrastructure as code, CI/CD, testing, and deployment workflows.
• Own services from design through production support with measurable SLIs and reliability goals.
• Incorporate AI assistants for code generation, testing, documentation, and reviews.
• Implement observability with structured logging, metrics, dashboards, and alerts.
• Collaborate on system design, security, performance, and developer experience improvements.
• Support environment-based deployments and versioned, secure APIs with resiliency patterns.

Skills

TypeScript/Node.js

Python

AWS

CI/CD

Infrastructure as code

Testing

OpenAPI/Swagger

AI-assisted development

Observability

DevOps practices

Security & reliability

Collaboration & code reviews

Kubernetes

Tools

FastAPI

Django

PostgreSQL

GitLab CI/CD

Terraform

AWS CDK

Kubernetes

Helm

Job description

Description

Hybrid 4 days onsite, 1 remote in Greenwood Village, CO

Our client seeks a Full Stack Software Engineer to build and operate a modern API platform. The team treats APIs as products with clear contracts, observability, documentation, and ownership. The role emphasizes TypeScript, Python, AWS, and DevOps practices with automation, infrastructure as code, CI/CD, and strong testing. AI-assisted development is part of daily work. The engineer will move from ambiguity to production solutions, take ownership across the lifecycle, and improve developer experience and platform reliability.

We can facilitate w2 and corp-to-corp consultants. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.

Rate: $65.00 to $75.00/hr. w2

JN -082026-108388

Responsibilities

• Design, build, and operate APIs to OpenAPI standards with clear contracts and documentation.
• Develop backend services using TypeScript/Node.js and Python frameworks such as FastAPI or Django.
• Implement automation via infrastructure as code, CI/CD, testing, and deployment workflows.
• Own services from design through production support with measurable SLIs and reliability goals.
• Incorporate AI assistants for code generation, testing, documentation, and reviews.
• Implement observability with structured logging, metrics, dashboards, and alerts.
• Collaborate on system design, security, performance, and developer experience improvements.
• Support environment-based deployments and versioned, secure APIs with resiliency patterns.

Experience Requirements

• TypeScript/Node.js for backend services, strong type system knowledge, async patterns, and API development.
• Python in production with FastAPI or Django and PostgreSQL optimization.
• AWS services including Lambda, Step Functions, S3, SNS/SQS, Secrets Manager, CloudWatch, and RDS/Aurora.
• Infrastructure as code with AWS CDK and/or Terraform.
• GitLab CI/CD, automated testing, security scanning, and multi-stage deployment workflows; monorepo a plus.
• API engineering with OpenAPI/Swagger, OAuth 2.0, versioning, rate limiting, resiliency, and idempotency.
• Testing discipline with unit/integration coverage and automated quality gates.
• Observability with tools such as Splunk or Datadog and production troubleshooting.
• Regular use of AI coding assistants and effective integration into workflows.
• Collaboration skills, thoughtful code reviews, and clean version control practices.
• Preferred: functional programming concepts (immutability, composition, typed errors) and frameworks such as Effect.js, fp-ts, or ZIO.
• Preferred: Kubernetes/EKS with Helm, blue/green and canary strategies.
• Preferred: SRE practices including SLIs/SLOs, error budgets, incident response, and toil reduction.
• Preferred: secure development, performance optimization, and distributed systems.